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Abstract

PURPOSE: To obtain a transparent resin having excellent transparency, useful for an optical material, a molding material, a film, a coating material, etc., by (co)polymerizing a specified monomer and, if required, a monomer copolymerizable therewith.

CONSTITUTION: A transparent resin is obtained by reacting 10W100wt.%, preferably 40W100wt.%, monomer (a) of the formula [wherein R1 is -CH=CH2, -CH2-CH=CH2, -COOC(CH3)=CH2, -COOCH2-CH=CH2, -OCOO-CH2-CH=CH2, -OCOO-CH2-C(CH3)=CH2, -OCOCH=CH2 or -OCOC(CH3)=CH2; R2 and R3 are each -CH3, -CH=CH2, -C6H5, -C6H4(OCH3), -C6H4(SCH3) or -C6H5-nXn; X is halogen; n is 1W3; A is O or S] and, if required, a monomer (b) copolymerizable with component (a) (e.g., divinylbenzene) in the presence of a radical polymerization initiator (e.g., benzoyl peroxide) at 5W100°C for 1W100hr.